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seismic refraction services

  • Seismic Refraction Tomography

    Refraction tomography bases on the classic seismic refraction studies. Classical refraction gives good results in the ground with relatively low variable structure and layers (which differ significantly in velocities of seismic waves). In contrast, tomography can localize more complex structures where seismic wave velocities change in different ...

    By GEOSPECTRUM S.C. based in Krakow, POLAND. from Seismic Studies Service line

  • Seismic Refraction Services

    Seismic refraction is a geophysical method used to determine the seismic compression-wave (P-wave) velocity structure of the subsurface. Seismic P-waves are generated on the surface, propagate through the soil and rock, and are recorded by geophones at known distances from the source. Since P-waves are the fastest portion of the seismic wave, they ...

    By Spotlight Geophysical Services based in Doral, FLORIDA (USA).

  • Marine Seismic Refraction Services

    Marine seismic refraction is a method to determine the seismic P-wave velocity structure of the subsurface. The P-wave velocity is related to the hardness of the sub-bottom materials and can be used to map the top-of-rock, determine the dredgeability of sub-bottom materials, and identify anomalous conditions. Seismic P-waves are generated by a ...

    By Spotlight Geophysical Services based in Doral, FLORIDA (USA).

  • Seismic Refraction and Reflection Techniques Services

    In seismic refraction surveys, a very small seismic wave is generated in the ground by either a hammer or small explosive change. This wave is refracted in the subsurface and detected by a series of sensitive geophones deployed along the ground. By measuring the travel-times of the seismic waves, the nature of and depth to subsurface features can ...

    By Explorer Geophysical and Hydrogeological Consultations based in riyadh, SAUDI ARABIA.

  • Near Surface Seismics Refraction

    Refraction technique was the first major geophysical technique used for the exploration or deep oilbearing layers. Currently, it is widely used in detailed studies of shallow subsurface.

    By GEOSPECTRUM S.C. based in Krakow, POLAND. from Seismic Studies Service line

  • Seismic Refraction Surveys Services

    Unexpectedly encountering rock during site development can be very costly to a well-balanced job budget. United Consulting utilizes the seismic refraction technique to assist our clients in avoiding this costly encounter by providing “up-front” information as to where rock and/or partially weathered rock may affect grading activities.

    By United Consulting based in Norcross, GEORGIA (US) (USA). from Geophysical Engineering Services Service line

  • Seismic Services

    Seismic Reflection Reveals What is Under the Surface. We use seismic reflection as a method of geophysical exploration that uses the principles of seismology to estimate the properties of the Earth's subsurface from reflected seismic waves. The method requires a controlled seismic source of energy, such as dynamite, a specialized air gun or a ...

    By GeoSearches Inc based in Chagrin Falls, OHIO (USA).

  • Sismic surveys

    A seismic survey is based on an energy source that excites seismic (elastic) waves in the subsurface. The seismic waves propagate in the subsurface and are reflected or refracted in the interfaces between mediums, having a different seismic velocity. The reflected and refracted waves are recorded on the surface by an array of receivers ...

    By Geotec Engineering & Environmental Geophysics Ltd based in rishon letzion, ISRAEL.

  • Refraction Microtremor (ReMi) Evaluations Services

    The refraction microtremor (RE/MI) technique utilizes Rayleigh waves. The technique can be employed with traditional seismic refraction to obtain engineering properties and simultaneously evaluate.

    By Ninyo & Moore based in San Diego, CALIFORNIA (USA). from Geophysical Service line

  • Seismic Methods

    All seismic methods measure the travel-time and frequency of elastic waves as they propagate through the subsurface. The methods commonly used in shallow geophysics involve using an impact source (hammer, weight drop, explosive source) to generate the seismic wave and recording the arrival of the waves with a seismograph and a series of geophones. ...

    By GeoView, Inc. based in St. Petersburg, FLORIDA (USA). from Land Based Methods Service line

  • Field Geotechnical Testing And Monitoring Services

    Deep Auger Borings with soil sampling and testing by Standard Penetration Test (SPT) Earthwork monitoring and fill density testing with nuclear gauges Plate Bearing Tests and CBR Ground Penetrating Radar (GPR) Downhole Seismic Tests Crosshole Seismic Tests Seismic Refraction Resistivity Ground Water Pumping Tests Piezometer installation and ...

    By Jaca & Sierra Testing Laboratories Psc. based in San Juan, PUERTO RICO.

  • Geophysical Surveying Services (Geophysics)

    ECA Geophysics performs geophysical surveys that accomplish several objectives that include 1) determining depth to bedrock (electrical and seismic methods), 2) establishing IBC Site Class via Refraction Microtremor - ReMi (seismic method), 3) locating buried metallic debris and drums (magnetic method), 4) delineating boundaries of solid waste ...

    By ECA Geophysics based in Kennewick, WASHINGTON (USA).

  • Geophysical Surveying Services

    ECA Geophysics performs geophysical surveys that accomplish several objectives that include 1) determining depth to bedrock (electrical and seismic methods), 2) establishing IBC Site Class via Refraction Microtremor - ReMi (seismic method), 3) locating buried metallic debris and drums (magnetic method), 4) delineating boundaries of solid waste ...

    By Environmental Compliance Associates, LLC (ECA) based in Kennewick, WASHINGTON (USA).

  • Downhole Shear Wave Velocity Services

    This method is a variation of the seismic refraction method employing a downhole tri-axial geophone and a surface energy source or a downhole source. The energy propagates from the source to the downhole tri-axial geophone and can be recorded as compression and/or shear waves. This method provides detailed layer velocity information and the data ...

    By Ninyo & Moore based in San Diego, CALIFORNIA (USA). from Geophysical Service line

  • geotechnical environmental drilling

    Jaca & Sierra Testing Laboratory is a soil and material testing laboratory civil and geotechnical engineering water well drilling firm based on Puerto Rico. Our services include soil steel and concrete testing. Our project typically involve construction, grouting, piles, deep foundations, shallow foundations, micropiles, geopiers, vibroflotation, ...

    By AQUA DRILLING INC based in SAN JUAN, PUERTO RICO.

  • Scanning Beneath the Seafloor Services

    GeoView employs three methods for studying the geologic strata and objects buried beneath the seafloor. These include Sub-bottom profiling, Marine Seismic Refraction and Marine Seismic Reflection. GeoView owns and operates an Edgetech sub-bottom profiler. It generates a swept frequency source to produce a high resolution image of the sub-bottom at ...

    By GeoView, Inc. based in St. Petersburg, FLORIDA (USA). from Marine Based Services Service line

  • Geophysical and Hydrographic Survey Services

    ERT geophysicists use a variety of geophysical survey and detection technologies for the detection and/or mapping of munitions and explosives of concern (MEC), landfills, subsurface structures, contamination plumes, and archaeological remains. The technologies include ground penetrating radar, seismic refraction, electrical resistivity, ...

    By Earth Resources Technology, Inc. (ERT) based in Laurel, MARYLAND (USA). from Environmental Services Service line

  • Geophex Geophysical Survey Services

    Geophex has extensive corporate experience conducting gravity, magnetic, electrical, electromagnetic, seismic reflection and refraction, and GPR surveys.  Geophysical investigations can often reduce remediation costs by avoiding unnecessary intrusive activity. We also fly airborne geophysical surveys using electromagnetic, magnetic, and other ...

    By Geophex, Ltd. based in Raleigh, NORTH CAROLINA (USA).

  • Geophysical Services

    Underground utilities can pose a variety of difficulties for construction and facilities management if their locations and depths are not accurately known. Drawings and maps of utilities are commonly inaccurate or, in many cases,utilities are not documented at all. Geophysical surveys are a rapid and cost effective means to map underground ...

    By Nova Geophysical Services (NOVA) based in Douglaston, NEW YORK (USA).

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